A suggestion I have would be to get into Safe Mode, open Device Manager, find the new driver for your CD/DVD device, and try to revert to the old driver first. You would do this by right-clicking the driver device and selecting "Properties". There will be a tab for the driver listed and options listed to update, remove, revert to old driver. You may have to put your drive back into your laptop when it is shut down, then turn it on, go to safe mode, device manager, and revert from there, since the new driver may not be present on your machine when the drive is not installed.
As I understand it, you are not able to even able to get past the BIOS screen, is that correct? (BIOS screen is the Dell logo with the progress bar loading). Please post your OS version as that will help me to determine your best course of action to resolve.
Safe Mode is gotten by hitting F8 repeatedly shortly after
the BIOS screen finishes loading and your screen goes blank. A new page should come up with several options, choose Safe Mode without networking.
Another option is to use System Restore. Go to a date and time before
you installed this new driver. You may be able to do this without the drive being installed, but System Restore may fail due to the drive not being there when your system is restored.
Other advice is forthcoming, but will only apply if the first two options are not doable.
Edited by joe schumacher, 01 November 2010 - 02:26 AM.